Windows XP IIS installation
Silverstripe 2.3.3

localhost/mysitename/?flush=1
works just fine
localhost/mysitename/
pulls up my site and all of its modifications just fine

localhost/mysitename/build?flush=1
localhost/mysitename/db/build?flush=1
localhost/mysitename/dev/build?flush=1

And just about all permutations of these fail with page not found
I cannot seem to find the way to rebuild my database and therefore cannot make any changes to it
I have been through most if not all of the forum notes with similar issues and none of the advice works on my installation
Help Appreciated!

This did just help me,

and to add - if you're just following the tutorial (as its's written as of 5/2012,) this link might help. I'm using wamp. It looks like the above link will get you where you need, with one extra step now that it's dev/build

http://localhost/silverstripe/index.php/dev/build?flush=1

Thanks again